It suggested that Friends didn’t actually happen in the first place and that it was concocted by the imagination of Jennifer Aniston’s character, Rachel Green.

The theory comes after one fan noticed that on the cover of the fourth season, Rachel is the only one with her eyes open whilst lying in bed with her friends. The other five - Joey, Monica, Chandler, Phoebe and Ross - all have their eyes closed.

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In order to answer the fans question, “Why is Rachel the only one ?”, another fan went on to explain the theory.

“Rachel Green had a dream on the eve of her wedding day. She didn’t want to marry Barry, so she had a major anxiety dream. She created a fantasy in her mind and the five other Friends characters as a way to escape her spoilt, trapped future life. And also the trauma of her getting married the next day”, the theory states.